Pulverized material sampler



l [Maida //VD/ J @o5/50N R E L m O Num.. @M1 III: Ema TVV. RAo JD .wwSIU. R EF V, L U P Nov. 1o, 1942.

Patented Nov. 10, 1942 i UNITED srnrss iiTiN'i' OFFICE This inventionrelates'to a means for obtaining samples of pulverized material, andparticularly to an improved apparatus for collecting various materialsin powdered form, such as cement samples and the like. f

It is the general object of the present invention to provide an improvedapparatus for `continuously obtaining a representative sample from aflowing lstream of pulverized materialand the like;

It is `another object of the invention to pro- Vvide an improvedapparatus for continuously sampling pulverized material and the likewhich is simple and inexpensive in its construction and, at the .sametime, one that is eiiicient and :l5 effective in its use.

It isa further lobject of this invention to provide an improvedapparatus for continuously sampling pulverized material and the likewhich is 'strong and rugged in its construction and yet :120

an apparatus which can be conveniently and .sampling apparatus of myinvention; and

Figure 2 is a section taken on line II-II of Figure 1. i

Referring more particularly to the drawing,

' the improved sampling device of my invention is shown incorporatedwith a vertically arranged spout or conduit member 2 through which thecement or other pulverized material passes from 40 one point to another.

According to the present invention, there is arranged within a housing 3positioned to one side of the spout or conduit 2, a horizontallyarranged shaft li which is arranged in suitable bearings 5 carried bythe housing 3. There is securely arranged on the shaft 4 centrallythereof, a disk-like member 6 having a plurality of spaced apart pocketsI arranged around the periphery thereof for receiving sample portions ofthe material as will hereinafter be described. The disk-like member 6 isarranged so that a portion thereof extends through a slotted opening 8and is disposed within the vertically arranged spout or conduit 2. Thespace between the Aedge of the opening 8 and the side walls of thedisk-like member 6 is sealed preferably by means or a felt member 9suitably arranged around the opening at both the sides, the top and thebottom of the disk 6 so as to seal the opening 8 against leakage.

There is securely arranged on one end of the shaft a circular member Ii]having cam portions i2 arranged preferably on the outer 'face `thereofadjacent the periphery of the same.

There is mounted on the outer side of the housing 3 adjacent the outeredge of the circular member I0, a rapping member in the form of a pin I3which is suitably mounted in a supporting member or housing i4 whichhouses a pair of coil springs Ii and I5b disposed around the pin with aflange I5 carried by the pin positioned therebetween and With the springI5b positioned below the ange adapted to retain the pinin a retractedposition. That is, the rapping pin I3 is suspended by the lower springso that the pin is normally slightly clear of the side of the samplingwheel or member 6. On the outer end of the pin I3 there is positionedpreferably a pin or stud shaft I6 which carries a roller I1 which isadapted to cooperate with the cam portions i?. carried by the circularmember I0 in a manner hereinafter to be described.

The shaft l may be driven in any suitable manner, but in the presentinstance there is shown a sprocket I8 securely arranged on the oppositeend oi the shaft 4 from the circular member I3 which may be driven by agear reducer and motor (not shown).

It will be understood that the sampling device of my invention operatesin the following manner:

The disk-like member 6, together with shaft to which itis attached, isrevolved in the direction shown by the arrow in Figure l, at arelatively slow speed in the stream of material as the same passesthrough the spout or conduit member 2. During such travel, theupperpockets l disposed in the spout 2 will be filled with the materialas the disk-like member rotates. As the pockets 'I pass through theslotted opening 8 and down through the housing 3, the circular member I9will actuate the pin I3 through the cooperation of the cam members I2and the roller I l thereby loading the coil spring I5. The pin willstrike a sharp blow against the side of the disk-like member 6 after thecam I2 is out of contact with the roller I'I. The material.

is thereby loosened from the pockets and will drop freely therefrom andbe delivered into the funnel-shaped portion I9 arranged at the bot tomof the housing 3 to which there is preferably connected a removablesample boX 20. It will be understood that when the pin I3 is released todeliver a tap or rapping action on the disk 6, it will travel beyond theneutral point or its retracted position against the action of the lowerspring Mib, thereby loading the same and the spring i510 will thenreturn the pin to its retracted or neutral position away from the disk.

It will be seen that my improved sampling device is shown incorporatedwith a gravity spout or conduit, but it will be understood that ifdesired, it can be incorporated in the systems where the cement orpulverized fuel is transported by means of pneumatic pressure. In such acase, the housing 3 would be air tightand the sample container or boxZtl would be attached to the funnel-shaped portion i9 of the housing 3with an air-tight joint. In such a case, the pressure in the transportpipe or conduit 2 and the housing 3 would be equalized and there wouldbe no tendency for the cement or pulverized material to be forcedthrough the opening 8 and the seal 9 around the disk-like member 6.

While I have shown and described an embodiment of my invention, it willbe understood that I do not wish to be limited exactly thereto sincevarious modications may be made without departing from the scope of theinvention, as defined in the appended claims.

I claim:

l. Apparatus of the class described including, in combination, asubstantially horizontal shaft, a rotatable disk-like member securelyarranged on said shaft which is adapted to rotate with a segment thereofin Contact with the stream of material to be sampled, said disk-likemember having a plurality of spaced apart pockets arranged around theperiphery thereof for receiving sample portions of the material as thesame is rotated in contact therewith, a rapping member which is adaptedto tap the disk-like member so as to cause the sample portions to droptherefrom due to gravity, means for receiving and coloting the sampleportions as the same are delivered from the pockets in said disk-likemember, a rotatable cam member securely arranged portions as the sameare delivered from the pockets of said disk-like member, and means foractuating intermittently said rapping member. 3. Apparatus of the classdescribed including, in combination, a vertically arranged conduitthrough which the material to be sampled ows to a point of delivery, asubstantially horizontal shaft rotatably arranged to one side of saidconduit, a disk-like member having a portion thereof extending into saidconduit securely arranged on said shaft, said disk-like member having aplurality of spaced apart pockets arranged around the periphery thereoffor receiving sample portions of the material as the same is rotated inthe conduit and the material comes in contact therewith, a rappingmember which is adapted to tap the disk-like member so as to cause thesample portions to drop therefrom due to gravity, means arranged belowsaid disk-like member for receiving and collecting the sample portionsas the same, are delivered therefrom, a rotatable cam member securelyarranged on said shaft which is adapted to intermittently actuate saidrapping member, and means for rotating said shaft together with saiddisk-like member an said cam member.

4. Apparatus of the class described including, in combination, a conduitthrough which the material to be sampled passes to a point of delivery,said conduit having an elongated opening arranged in the side thereof, adisk-like rotatable member having a portion thereof extending throughsaid opening into said conduit, said disklike member having a pluralityof spaced apart pockets arranged around the periphery thereof forreceiving sample portions of the material as the rotatable memberrotates in the opening in said conduit, means arranged around saidopening and the rotatable member for sealing the space between the sidesof the opening and the rotatable member disposed therein againstleakage, said rotatable members upon rotation thereof adapted to pick upportions of the material from said conduit for sampling by means of thepockets carried by said rotatable member and to carry said portions to apoint outside of said conduit, and means arranged on the outer side ofsaid conduit for receiving the sample portions of the material as theyare delivered from said pockets.

SIDNEY J. ROBISON.

